摘要
为研究不同NFC/NDF比日粮对奶山羊血液参数的影响,选用3只（30-35 kg）安装有瘤胃瘘管的关中奶山羊,采用自身对照试验法,饲喂非纤维性碳水化合物/中性洗涤纤维比（NFC/NDF）分别为1.02（Ⅰ组）、1.24（Ⅱ组）、1.63（Ⅲ组）、2.58（Ⅳ组）的4种日粮。结果表明：血液的pH、碳酸氢根（HCO3^-）含量、碱剩余（BE）、标准碳酸氢盐（SBC）均以Ⅳ组最低,饲喂后6 h显著低于Ⅰ、Ⅱ、Ⅲ组（P〈0.05）;二氧化碳分压以Ⅳ组最高,各组间差异不显著（P〉0.05）;随日粮NFC/NDF水平增加,血清K^＋呈降低趋势（P〉0.05）,Ca^2＋、Cl^-含量变化不明显,Na^＋、阴离子间隙呈上升趋势（P〉0.05）,均处于正常变动范围内;在本试验条件下,亚急性瘤胃酸中毒未显著影响血液的酸碱平衡。
Guanzhong dairy goats （ n = 3 ;30 - 35 kg）, each fitted with a ruminal cannulae, were used to evaluate the effects of four different ratios of NFC to NDF in diets on blood parameters. The NFC/NDF werel. 02 （ Ⅰ ）, 1. 24 （ Ⅱ ）, 1. 63 （Ⅲ） and 2. 58 （ Ⅳ）, respectively. The results showed that： （1） blood pH, HCO3^- concentration, base excess and standard bicarbonate（ SBC）were not affected significantly by increasing NFC/NDF in diets,but tended to be the lowest in Ⅳ treatment,which were lower than those in Ⅰ, Ⅱ, Ⅲtreatments after feeding 6 hours （ P 〈 0. 05 ） ; （2）blood partial pressure of carbn dioxide （ Pco2 ） was highest in Ⅳ treatment. There was no significant difference among the treatments （ P 〉 0. 05 ） ; （3）with the increasing NFC/ NDF, serum Ca^2 ＋, Cl^-were unchanged remarkably, serum K^＋ decreased and Na^＋ , anion gap tended to increase, but the changes were all within normal physiological range ;（4）in the experimental condition, the changes in blood acid -base balance were small during subactute ruminal acidosis.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2008年第5期855-859,共5页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金项目资助(30560105)
关键词
NFC/NDF
血液
奶山羊
non -fiber carbohydrate to neutral detergent ratios
blood
dairy goat
